logo
AAT Bioquest

What color is Cy3?

Posted July 1, 2021


Answer

Cy3 is orange in color. It fluoresces greenish yellow at 555 nm excitation and 570 nm emission. Cy3 belongs to the Cyanine family of synthetic polymethine dyes and is widely used for flow cytometry, imaging, and genomic applications.

Additional resources

Protein Environment and DNA Orientation Affect Protein-Induced Cy3 Fluorescence Enhancement

Cy3 tyramide